Gmail buttons need alt tags

How do I find a list of all of the domains that Gmail uses for content delivery?

Our library web filter is filtering out the icons for Gmail buttons. Patrons are baffled when looking at their email. It seems like there could at least be an alt tag for the buttons. I realize that they are background images, but there has to be a text method of delivering button information; or maybe a way of switching to a text only mode.

Barring that, how do I find a list of all of the domains that Gmail uses for content delivery?

We need this so that we can add this to our web content filter allowed domains. These domains are not always obvious as the icon may be referenced in css or javascript only.

Furthermore, there is no way to "unblock" these assets as there is no page referenced where you would normally get a way to unblock the page.

No. There are no add-ons or toolbars enabled. Our computers are public computers.

>Have you tried disabling Settings->Offline->Offline Mail if you use it?

Don't use it.

>Have you tried disabling Settings->Buzz and any other additional products >associated with your account?

Don't use it.

>Have you tried going to Settings->Account->Browser Connection and tried both >types: http and https?

I assume this is the same as typing mail?ui=html at the end of the domain. It works. I cannot change settings for hundreds of random users in the public libraries.

>Have you updated your browser to the latest version?

No. Will do during the next software roll-out. Since it happens in both ie and Firefox, I imagine that it is not a browser issue.

I really appreciate your time with this!

I would also like to reiterate for Google that the architecture for the new gmail is fundamentally flawed. In the event that background images are blocked by a web filter, firewall or virus software the new interface becomes unusable. See attached image.

In the event that there is a web filter present, you normally would get an option to turn off blocking. In this case though the option is not present since the images are just an asset loaded in the background. I wish filters were better about this, but they are not.

Please either put the background images on the same server as the gmail html or re-architect the design to incorporate alt tags.

>Have you tried going to Settings->Account->Browser Connection and tried both >types: http and https?

I assume this is the same as typing mail?ui=html at the end of the domain. It works. I cannot change settings for hundreds of random users in the public libraries.

No, it is not the same thing. mail?ui=html puts you in "Basic html mode," which is completely different from changing the setting for http vs https mode. Please try that for at least one ID to see if it solves the problem. That would at least point to where the source of the problem might be.

>Have you updated your browser to the latest version?

No. Will do during the next software roll-out. Since it happens in both ie and Firefox, I imagine that it is not a browser issue.

Depending on whether the systems have supported versions of the browsers (ref: http://support.google.com/mail/bin/answer.py?hl=en&answer=6557, it might very well be a browser issue. Today's browsers provide capabilities that were not available in older browsers (or didn't work properly). You should expect that Gmail--and other Google products--will not work properly if your systems have browsers that are not at the levels shown in the document above.